Truck.



PATENTED, APR. 14, 1903.

G. w. KING, H. J. BARNHART & c. B. KING.

' TRUCK.

. APPLICATION FILED FEB. 7, 1903.

H0 MODEL.

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UNTED STATEs ATENT OFFICE.

GEORGE w. KING, HARRY J- BARNHART, AND oIIARLEs B. KING,.OF

MARION, OHIO, AssIGNORs TO THE MARION STEAM sI-IOvEL OOM- PANY, OF MARION, OHIO, A CORPORATION OF OHIO.

TRUCK.

SPECIFIGATION forming part of Letters Patent No. 725,344, dated April 14, 1903.

Application filed February 7,1903. Serial No. 142,299. (No model.)

To all whom it may concern:

Be it known that we, GEORGE W. KING, HARRY J. BARNHART, and OHARLEs B; KING, citizens of the United States, residing at Ma rion, in the county of Marion and State of Ohio, have invented certain new and useful Improvements in Trucks, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to trucks for steamshovels, and has for its object to provide a construction for trucks used in supporting the car-bodies of steam -shovels adapted to travel on railways, which will enable the truck to withstand the lateral strains to which it is subjected by reason of the swinging of theline 00 a; of Fig. 1 and looking in the direction of the arrows, and Fig. 3 is a detail side elevation of the central portion of one side of the truck. In steam-shovels adapted for use uponrailways and supported upon swiveling trucks the boom is adapted to swing from a position in line with the longitudinal axis of the carbody, which is supported by the trucks, to a position at right angles to said axis. In this latter position severe lateral strains are brought upon the trucks, and to strengthen the trucks against such strains we have devised the following construction.

The truck-bolster (indicated at 1) may be of any suitable construction and is mounted above a spring-board 2, which is formed bya channel-bar. The bolster and channel-bar are connected by a boss or projection on one of said members and a correspondingsocket on the other member, and we prefer to secure a socket-casting 3 to the under side of the bolster, at the middle thereof, which socketcasting receives a boss or projection 4, fitted in and secured to the channel-bar 2. The 5o usual springs 5 are interposed between the channel-bar and bolster, at each end thereof. The end frames of the truck are so constructed that the lower arch-bars 6 and the tie-bars 7 pass underneath and are secured to the ends of the channel-bar, 2, while the upper arch-bars 8 pass over the top of the bolster 1, which latter is provided with projections 9, preferably in the form of castings secured to the top thereof, said projections lying on each side of the upper arch-bars, so as to prevent lateral motion of the bolster relatively thereto. The parts are connected bythe usual vertical'bolts 10, passing downward through the pillars 11 and also through the arch and 6 5' tie bars, the channel 2 being fastened to the pillars 11 by rivets 12 or in any other suitable manner.

It will be seen that by reason of the construction just described the side thrust due to the lateral swing 'of the boom is taken by both the top and bottom arch-bars and equally distributed to them, so that the twisting of said bars is prevented, while the truck as a whole is better adapted to resist the lateral strains to which it is subjected in use. While the truck above described is particularly adapted for use in connection with railway steam-shovels, it is also. obviously capa ble. of .usein other. connections. I Moreover, we do not wish to be understood as limiting ourselves to the precise details of construction hereinbefore described, and shown in the acoompanying'drawings, as it is'obvious that these details may be modified without departing from the principle of ourinvention. Having thus fully described our invention, what we claim as new, and desire to secure by Letters Patent, is

1. Atruck for railway steam-shovels or the 0 like, comprising a; bolster provided with retaining' projections on its upperside at each end, and a tie member located below the bolster, said bolster and tie member being provided centrally with an engaging socket and 5 projection, and with interposed springs at their ends, incombination with lower archbars passing under and fixedly connected with the tie member, and upper arch-bars passing over the bolster between the projections thereon, substantially as described.

2. A truck for railway steam-shovels or the like, comprising a bolster provided with retaining projections on its upper side at each end, and atie channel-bar below the bolster, said bolster and channel-bar being provided centrally with an engaging projection and socket and having springs interposed between their ends, in combination with lower archbars passing under and fixedly connected with the tie channel-bar, and upper arch-bars passing over the bolster between the projections thereon, substantially as described.

3. A truck for railway steam-shovels or the like, comprising a bolster having a central socket-piece on its under side, and retaining.

GEORGE W. KING. HARRY J. BARNHART. CHARLES E. KING.

Witnesses:

ROBERT G. LUCAS, WILLIAM R. SHESLER. 

